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Finding the Fourth Proportional to 29,356.40, 40,509.96 and 16,780.88

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Solution

The fourth proportional to 29,356.40, 40,509.96 and 16,780.88 is: 23,156.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,356.40 : 40,509.96 = 16,780.88 : x
  2. Step 2: Convert to fraction form
    29,356.40/40,509.96 = 16,780.88/x
  3. Step 3: Cross multiply
    29,356.40x = 40,509.96 × 16,780.88
  4. Step 4: Simplify right side
    29,356.40x = 679,792,777.56
  5. Step 5: Solve for x
    x = 679,792,777.56/29,356.40
  6. Step 6: Final answer
    x = 23,156.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.